1. Department of Epidemiology, Johns Hopkins Bloomberg School of Public Health, Baltimore, MD
2. Department of Epidemiology, University of North Carolina at Chapel Hill, Chapel Hill, NC
3. Division of General Internal Medicine, Department of Medicine, The University of Chicago, Chicago, IL
4. Division of Endocrinology, Diabetes, and Metabolism, Department of Medicine, Johns Hopkins University School of Medicine, Baltimore, MD
5. Division of General Internal Medicine, Department of Medicine, Johns Hopkins University School of Medicine, Baltimore, MD